DataVXSmallPaper
journal article·2025-08

Engineering Superhydrophilic and Fouling‐Free COF Armor for Ultrafast Oil–Water Separation

Mi Zhou, Jingwen Zhou, Linlin Yan, Suyang Li, Xinwen Cao, Yingjie Zhang, Jun Ma, Lu Shao, Zongli Xie, Xiquan Cheng

Small· Volume 21· Issue 34
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Source abstract

Abstract

Abstract Polymeric nanofibrous membranes are promising candidates for highly efficient oily wastewater separation, however, they suffer from irreversible membrane fouling. Herein, hydrophilic β‐ketoenamine‐linked covalent organic frameworks (COFs)‐modified polyacrylonitrile (PAN) nanofibrous membranes (PNMs‐COF) are developed, and the microstructures and hydrophilicities of the membranes are finely tailored. The hydrophilic rigid COF armor can induce the formation of hydrogen bonds with water, increase the polar component of the apparent surface tension, enhancing the driving force toward water and increasing the repulsion against oil droplets. Moreover, the inherent rigidity of the COFs further prevents deformation of the flexible fiber chains under gravity, precluding irreversible contamination due to embedded oil droplets. The multiple‐mechanism‐driven membrane exhibits superior oil rejection (99.3%), anti‐fouling ability (nearly zero irreversible fouling), and ultra‐high permeance (3.4 × 104 L∙m−2∙h−1∙bar−1), enabling a sound step toward oil‐wastewater remediation.
Source: crossref · Quality: baseline

Research context

PolymersNanomaterials

OpenAlex topics: Membrane Separation Technologies · Surface Modification and Superhydrophobicity · Enhanced Oil Recovery Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Urban‐rural Water Resource and Environment School of Marine Science and Technology Harbin Institute of Technology Weihai Shandong 264209 China

Shandong Sino‐European Membrane Technology Research Institute Co. Ltd. Weihai Key Laboratory of Water Treatment and Membrane Technology Weihai Shandong 264209 China

State Key Laboratory of Urban Water Resource and Environment School of Environment Harbin Institute of Technology Harbin Heilongjiang 150090 China

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemical Engineering and Technology State Key Laboratory of Urban Water Resource and Environment (SKLUWRE) Harbin Institute of Technology Harbin Heilongjiang 150090 China

CSIRO Manufacturing Private bag 10 Clayton South MDC VIC 3169 Australia

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Fundamental Research Funds for the Central Universities · State Key Laboratory of Urban Water Resource and Environment

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